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Anatomy of Flowering Plants Mock Exam-8

Question No:1

The growth of the roots and stems in length with the help of apical meristem is called

[A] secondary growth
[B] primary growth
[C] both
[D] none



Question No:2

Dicot plant exhibits an increase in girth. It is an example of

[A] secondary growth
[B] primary growth
[C] both
[D] none



Question No:3

Cells of cambium present between primary xylem and primary phloem forms

[A] interfascicular cambium
[B] intrafascicular cambium (fascicular cambium)
[C] cork cambium
[D] none



Question No:4

Vascular cambium is formed by
I. interfascicular cambium.
II. intrafascicular cambium.
III. cork cambium.

[A] I and III only
[B] II and III only
[C] I, II and III only
[D] I and IT only



Question No:5

Cambium wing forms cells towards

[A] inner side of ring
[B] outer side of ring
[C] both side of ring
[D] they do not form cells



Question No:6

Vascular Cambium activity is

[A] more on inner side than outer
[B] more on outer side than inner
[C] equal on outer and inner side
[D] none of the above



Question No:7

Following will not happen during secondary growth by cambium ring:

[A] Secondary xylem produced is more than secondary phloem
[B] Primary and secondary phloem crushed due to continued formation and accumulation of secondary xylem
[C] Primary xylem remain more or less intact in or around centre
[D] The cells cut off towards pith mature into secondary phloem and cells cut off towards periphery mature into secondary xylem



Question No:8

During secondary growth all occur except

[A] secondary medullar rays forms
[B] phloem crushed
[C] primary phloem forms
[D] secondary xylem forms



Question No:9

Activity of cambium is under control of

[A] physiological factor
[B] environmental factor
[C] both
[D] none



Question No:10

Select total number of correct statements from the following:
(1) In spring season cambium is active and produces a large number of xylary elements having vessels with wider lumen.
(2) Spring wood is also known as early wood.
(3) In winter cambium is less active and forms few xylary elements having narrow vessels this is called autumn wood or late wood.
(4) Spring wood is lighter in color and has lower density.
(5) Autumn wood is darker and has higher density.
(6) Annual ring (autumn wood and spring wood) used to estimate the age of plant,

[A] 3
[B] 4
[C] 5
[D] 6



Question No:11

In older trees greater part of secondary xylem is dark brown due to deposition of

[A] tannins and resins
[B] oil and gums
[C] aromatic substance and essential oil
[D] all



Question No:12

Dark brown deposition of organic compound in heartwood will make it

[A] hard
[B] durable
[C] resistant to microbes and pest
[D] all



Question No:13

Heartwood contain

[A] live lignified element
[B] dead highly lignified element
[C] live non-lignified element
[D] dead non-lignified elements



Question No:14

Function of heartwood is

[A] conduction of water
[B] conduction of mineral
[C] conduction of food
[D] mechanical support